The invention discloses a method for manufacturing a fiber self-adhesion elastic bandage, which comprises the process flows of: processing by a charging system; metering; mixing cotton; hackling; laying a net; processing by a primary forming system; punching a hole; processing by a secondary forming system; forming a semi-finished product; splitting and packaging; and forming a finished product. The method has a simple process. No chemical substances are added in the manufacturing process, and thus, no chemical substances are left in the product.